| 超大型金刚石矿床、磷矿床、油气田、油页岩矿床与碳质球粒陨石星子的成因联系 |
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| 引用本文：.1990.Genetic relationship of supergiant diamond deposits, phosphorite deposits, oil-gas fields and oil shale deposits to carbonaceous Chondrite planetesimals[J].Mineral Deposits,9(3):279~286 |
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| 中文摘要:通过对太阳系起源的研究，笔者指出，超大型金刚石矿床、磷矿床、油气田和油页岩矿床，都与碳质球粒陨石星子有成因联系。碳质球粒陨石星子被吸积于原始地球上地幔表层，形成原始富碳区。当地壳形成后，富碳区的岩石圈没有被软流层的对流作用均匀化，并在155—250km深度范围内，碳质聚合成金刚石。随着金怕利岩和钾镁煌斑岩岩浆侵位，金刚石被带入地壳上部形成金刚石矿床。在富碳区，除金刚石矿床外，还形成了超基性岩一碱性岩一碳酸岩富磷杂岩体及超大型，大型磷灰石矿床。富磷杂岩体为超大型磷块岩矿床的形成提供了成矿物质，也为成油生物群的繁殖提供了矿物养料，从而为形成超大型油气、油页岩矿床创造了物质条件。碳质球粒陨石中的有机质在高温条件下合成油气，被封存于大陆岩石圈上地幔部分，在构造条件有利时进入储油构造，促进了超大型油气田的形成。超大型矿床的存在，是岩石圈成矿物质横向不均匀性的反映。 |
| 中文关键词:碳质球粒陨石 金刚石 磷 石油 油页岩 超大型矿床 |
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| Genetic relationship of supergiant diamond deposits, phosphorite deposits, oil-gas fields and oil shale deposits to carbonaceous Chondrite planetesimals |
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| Abstract:Based on a study of the origin of the solar system, the author believes that there exists genetic relations hip of supergiant diamond deposits, phosphorite deposits, oil-gas fields and oil shale deposits with carbonaceous chondrite planetesimals. Carbonaceous chondrite planetesimals were。Adsorbed on the mantIe surface of the primitive earth, forming primitive carbon-rich areas. After the formation of the crust, the lithosphere in the carbon-rich areas was not homogenized by the convection of the asthenosphere, and carbonaceous substances were accumulated to form diamond within the depth of 155-250km. With the emplacement of kimberlitic and potash-magnesian lamprophyric magma, diamond was brought into the upper crust, forming diamond deposits. In carbon-rich areas, ultrabasic rooks-alkalic rocks-carbonate phosphorus-rich Complexes as well as supergiant and large-sized phosphorte deposits were also formed beside diamond deposits. The phosphorus-rich complexes provided not only minerogenic materials for the formation of supergiant phosphorite deposits, but also mineral nutrients for the propagation of oil-forming biota, thus creating material prerequisite for the formation of supergiant oil-gas and oil shale deposits. Under the condition of high temperatures the organic substances in carbonaceons chondrite were combined into and gases, which were confined to the upper mantle but entered oil-bearing structures wherever the structural conditions were favorable, hence stimulating the formation of giant oil-gas fields. The presence of supergiant ore deposits is a manifestation of lateral non-uniformity of ore-forming materials in the lithosphere. |
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